Implement MediaValues for initial viewport.

third_party/WebKit/Source/core/css/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//third_party/WebKit/Source/core/core.gni")
 
 blink_core_sources("css") {
   split_count = 5
   sources = [
     "ActiveStyleSheets.cpp",
@@ skipping 176 matching lines @@
     "MediaQueryList.cpp",
     "MediaQueryList.h",
     "MediaQueryListEvent.h",
     "MediaQueryListListener.cpp",
     "MediaQueryListListener.h",
     "MediaQueryMatcher.cpp",
     "MediaQueryMatcher.h",
     "MediaValues.cpp",
     "MediaValuesCached.cpp",
     "MediaValuesDynamic.cpp",
+    "MediaValuesInitialViewport.cpp",
+    "MediaValuesInitialViewport.h",
     "PageRuleCollector.cpp",
     "PageRuleCollector.h",
     "PropertyRegistration.cpp",
     "PropertyRegistration.h",
     "PropertyRegistry.cpp",
     "PropertyRegistry.h",
     "PropertySetCSSStyleDeclaration.cpp",
     "PropertySetCSSStyleDeclaration.h",
     "PseudoStyleRequest.h",
     "RemoteFontFaceSource.cpp",
@@ skipping 164 matching lines @@
     "resolver/TransformBuilder.h",
     "resolver/ViewportStyleResolver.cpp",
     "resolver/ViewportStyleResolver.h",
   ]
 
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",
   ]
 }